Videos I took are no where to be found, I never deleted any of them. They just disappeared.

This past weekend I traveled 10+ hours to Montreal for a music festival, I got so many videos of my favorite music artists and groups, but once I returned home and went to go watch them again, they were all gone besides the few I took later last night. I did not delete them, I did not delete them from recently deleted, they are not in the cloud or in streaming and I even downloaded several apps on my computer to get back deleted content but they were not showing up. At this point it is more me being confused and upset that it happened and I don't get why. Someone please help or something. Thank you. -Cooper